AMPP Store - Individual Conference Papers

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Understanding the Influence of Surface Condition on the Fatigue and Corrosion Fatigue Behavior of SLM718

Product Number: 51324-21234-SG

Author: Helmuth Sarmiento Klapper; Nils Holzapfel; Wei Chen; Juan Carlos Flores

Publication Date: 2024

$40.00

Selective laser melting (SLM) is a widely used additive manufacturing (AM) process, also for producing components using precipitation-hardenable nickel alloy 718 (UNS N07718). SLM has been largely accepted into many industries including oil and gas (O&G) with current research efforts focused on demonstrating materials performance in demanding applications including directional drilling and reservoir characterization tools. A broader applicability of additively manufactured UNS N07718 in such applications is currently conditioned by characterization efforts limited to corrosion testing on machined surfaces, which are not representative of the surface resulting from SLM process. The lack of understanding regarding the influence of as-printed surface conditions for UNS N07718 produced via SLM on fatigue and corrosion fatigue limits its applicability to the machined surface condition, thus negating benefits gained during the manufacturing process. In this research work, the fatigue and corrosion fatigue behavior of additively manufactured UNS N07718 in as-printed conditions was investigated. Besides fatigue in air at ambient temperature, corrosion fatigue of SLM718 was tested in alkaline 5 M chloride-containing brines at 125 °C to simulate a typical drilling environment. Experimental results have shown that as-printed surfaces of SLM718 are significantly more prone to fatigue and corrosion fatigue compared to machined surfaces. Besides increased surface roughness the presence of near-surface defects typical of AM can be seen as the reason for the observed fatigue behavior.

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Understanding the Total Cost of a Corrosion Issue in the Oil and Gas Industry

Product Number: 51317--9286-SG

ISBN: 9286 2017 CP

Author: Laura Cardenas

Publication Date: 2017

$20.00

Case study: A Steam Assisted Gravity Drainage facility in northern Alberta, Canada is examined as it experienced two very similar failures in heat exchanger tubes within 2 years of each other due to a boiler feedwater tank without a nitrogen blanket and a low flow condition.

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Understanding the True Meaning of Green for the Wastewater Industry

Product Number: 41211-588-SG

Author: Eric Brackman

Publication Date: 2011

$20.00

The wastewater industry embraces “going green” but it is not just about the latest and greatest VOC compliant products on the market. Green starts with advanced coatings technology and the knowledge and support of the industry professionals from design to completion and beyond.

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Understanding The Usefulness of German Test Method TL 8135-002 For Various Steel Alloys

Product Number: 51323-19169-SG

Author: Jonathan Brekan, Nicholas Smith, Kristi Lanzo

Publication Date: 2023

$20.00

The utilization of volatile corrosion inhibitors (VCI) in dry packaging scenarios have become ubiquitous throughout industry for the protection of metal parts during shipping and storage. Initial protective packaging applications of VCIs involved coated paper which was used to wrap or interleave metal parts for transportation and/or storage. This type of wrapping evolved into film packaging where the inhibitors were extruded into film.

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Understanding Why PREN Alone Can Not be Used to Select Duplex Stainless Steels

Product Number: 51315-6005-SG

ISBN: 6005 2015 CP

Author: Luis Garfias

Publication Date: 2015

$20.00

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Understanding Zinc Rich Primers & Importance of Performance Based Approach Single Coat vs 3 Coat Performance

Product Number: 41210-574-SG

Author: Ilhan Ulkem, Mike Winter

Publication Date: 2010

$20.00

This paper summarizes the problems encountered by manufacturers and end-users relying on the available standards for materials and performance tests for zinc-rich coatings in today’s industry and presents some suggestions for improving them. The reasons and the need for developing new and only performance based specifications are also explained.

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Understaning Wood Finishing

Product Number: 41207-332-SG

Author: Bob Flexner

Publication Date: 2007

$20.00

By organizing and defining the finishes and solvents, wood finishing becomes much easier to understand. This paper deals first with the finishes and then with the solvents.

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Underwater Ship Hull Coatings Systems in thte Post-TBT ERA

Product Number: 41212-661-SG

Author: Boud van Rompay

Publication Date: 2012

$20.00

With TBT banned and legislation restricting the use of copper and other biocides tightening up, the best approach is a hard, inert long-lasting coating combined with routine in water cleaning.

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Unexpected Consequence of Biocide Addition on Corrosion

Product Number: 51323-19326-SG

Author: Susmitha Purnima Kotu, Christopher Kagarise

Publication Date: 2023

$20.00

Microbiologically influenced corrosion (MIC) is recognized as a significant corrosion threat to oil and gas pipelines. Biocides are commonly applied as a means of killing microorganisms with the goal of reducing both microbial concentrations and corrosion rates. Laboratory experiments are typically used in selecting an effective biocide prior to application to a pipeline system.

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Uniform and Localized Corrosion Study of Base Material and Welds of Ni-Cr-Mo (W) Alloys

Product Number: 51317--9406-SG

ISBN: 9406 2017 CP

Author: Ajit Mishra

Publication Date: 2017

$20.00

In the present study, corrosion behavior of base metal (BM), all-weld-metal (AWM) and heat-affected-zone (HAZ) samples of C-276 (UNS N10276), C-22 (UNS N06022) and C-2000 (UNS N06200) alloys were evaluated in concentrated hydrochloric (HCl), sulfuric (H2SO4) and nitric acid (HNO3).

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Uniform Corrosion Characterization of UNS N08935

Product Number: 51323-19294-SG

Author: Björn Helmersson, Marie Almén

Publication Date: 2023

$20.00

Highly alloyed stainless steels and Ni-based alloys may be used in a wide range of different chemical environments. By investigating how different alloys are affected by environmental changes – be it chemical composition, temperature, contaminants or others – it is possible to learn more about how material selection can be optimized to improve both cost efficiency and longevity of a system.

UNS N08935 is a highly alloyed austenitic material in the borderland between stainless steels and Ni-based alloys

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Unique Application of an Epoxy Repair Gel to Eliminate Draft Tube Surface Wear and Cavitation, potentially Improving Turbine Power Generation Efficiency

Product Number: 41216-976-SG

Author: Norm Klapper

Publication Date: 2016

$20.00

A unique project was completed in Mid-2014 at the Powerhouse #3, Turbine Unit #23 refurbishment, Grand Coulee Dam, located in Washington State. The project scope includes a complete overhaul of the turbine bearings, windings, and critical components. As part of the overall scope, the contractor was charged with the task of coating the entire draft tube surface with an epoxy gel. The Bureau of Reclamation, based in Denver, Colorado, had conducted a site survey which indicated severe wear lines, which result in cavitation and the accompanying backpressure on the exiting water outflow to the Columbia River.

Individual Conference Papers

Association for Materials Protection and Performance